374 MEMOIRS ON THE COLEOPTERA 



The short cinereous clothing is always dense beneath and on the 

 legs, and is also generally distinct although always less dense on 

 the upper surface and antennae. 



In the following review I have been unable to recognize oregon- 

 ensis, basalis or mancus of LeConte. The first is nearly 14 mm. in 

 length, has the prothorax abruptly elevated medially, the discal 

 spots of the elytra in the usual position but very small and often 

 wholly obsolete; it is compared with basalis under the original 

 description, as also having the basal antennal joint red, a very 

 unimportant feature however, and is said to differ by having the 

 thoracic umbo abruptly elevated, indicating that it is not abruptly 

 elevated in basalis, though in the original description of the latter, 

 founded on an example from the Sierra Nevada, the sides of the 

 prothorax are said to be "subito depresso"; but, more important 

 still in regard to basalis, the fourth elytral spot, meaning probably 

 the posterior discal spot, is said to be "placed quite at the margin," 

 which would cause it to be an exception in the entire genus and 

 equally an exception if the fourth spot were the post-humeral; 

 just before the quotation given, it is said that the spots have the 

 same position as in femoratus! That the spot may not be normally 

 placed in basalis, however, is perhaps indicated by the care taken, 

 under the description of oregonensis, to state that the spots "are in 

 the usual position" in that species. Mancus, from the Tejon region 

 of southern California, seems to have the usual coloration and to be 

 briefly nigro-pilose, the thoracic umbo abruptly elevated, the elytra 

 moderately punctate and with only the humeral and post-median 

 spots, as in quinquemaculatus , the legs \vholly black as in that 

 species, the antennae annulate wdth cinereous and the scape tinged 

 with red. I have one example which comes very close to this 

 diagnosis, agreeing in every way except as to the black elytral hairs 

 and the annulated antennae, neither of these characters being evi- 

 dent; it is named omissus below. That mancus should have been 

 united with femoratus as a variety is not readily comprehensible; it 

 is evidently a fully distinct species. 



Basalis is not considered at present, as it seems to be an isolated 

 type, probably peculiar to the Sierra Nevada region, though, in 

 most collections, any specimen with a red scape is liable to be found 

 under that name. Oregonensis is also omitted, as I do not have 



